package SoftwarePrinciple.DependencyInversionPrinciple;

/**
 * @author: Themberfue
 * @date: 2025/8/7 11:53
 * @description:
 */
// 抽象接口（高层和低层都依赖它）
public interface MessageService {
    void sendMessage(String content, String recipient);
}
